With the continuous development of network and related technologies, the construction of an orderly path of network democratic participation has become an important aspect of socialist political civilization construction and national governance modernization. This paper comments on the ethical significance of the participation of network democracy in the national affairs, such as improving the enthusiasm of the public in the national affairs, improving the political literacy and moral awareness of Internet users, and promoting the modernization of the national governance system and governance ability. The paper discusses the problems of the current network democratic participation, such as the lack of rational participation of a few Internet users, the lack of effective public opinion guidance ability in the development of some public opinions, and considers that the lag of the construction of the network political ethics system is one of the main reasons for various problems. It is suggested that cultivating public rationality of Internet users, strengthening and improving the ability of public opinion guidance, especially building a network political ethics system with Chinese characteristics, can fundamentally solve many problems of network democratic participation, build an effective path for network democratic participation and promote the modernization of national governance.